From f75d2311cd5851fcf35c9d4b5f6be49878f3256d Mon Sep 17 00:00:00 2001
From: Fabian Pedregosa <fabian.pedregosa@inria.fr>
Date: Tue, 14 Dec 2010 17:58:35 +0100
Subject: [PATCH] FIX: do not invert the sign of decision_function in
OneClasSVM.
---
scikits/learn/svm/base.py | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/scikits/learn/svm/base.py b/scikits/learn/svm/base.py
index afe86ded53..1a4a8f348a 100644
--- a/scikits/learn/svm/base.py
+++ b/scikits/learn/svm/base.py
@@ -276,10 +276,14 @@ class BaseLibSVM(BaseEstimator):
self.support_, self.label_, self.probA_,
self.probB_)
- # libsvm has the convention of returning negative values for
- # rightmost labels, so we invert the sign since our label_ is
- # sorted by increasing order
- return -dec_func
+
+ if self.impl != 'one_class':
+ # libsvm has the convention of returning negative values for
+ # rightmost labels, so we invert the sign since our label_ is
+ # sorted by increasing order
+ return -dec_func
+ else:
+ return dec_func
@property
def coef_(self):
--
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